Had the flu, fever etc. dr. prescribed amoxacilin and other meds, now after 4 days 35.7c* hard to breath and frequent cough, is it normal ?

See a doctor ASAP: If you really have influenza you should not have been treated with antibiotics as they are not only worthless, but potentially dangerous. Your symptoms now suggest the possibility that you have involvement of your lungs and any time your are short of air this is a potential medical emergency. Go to a doctor or an er now before this becomes more severe. Good luck.